The energy stored in an object due to its vertical position or height in a gravitational field.

What is the definition of Gravitational Potential Energy (GPE)?

E_p = mgh
◦ E_p: Joules (J)

◦ m: kilograms (kg)

◦ g: Newtons per kilogram (N/kg)

◦ h: meters (m)

What is the formula for GPE and what are the standard units for each variable?

GPE decreases as height decreases, and it is transferred into Kinetic Energy, which increases as the object speeds up.

If an object is falling (ignoring air resistance), what happens to its GPE and Kinetic Energy (KE)?

The GPE triples. GPE is directly proportional to height.

How does GPE change if you triple the height of an object?

Because the gravitational field strength (g) is much weaker on the Moon (approx. 1.6 N/kg) than on Earth (9.8 N/kg).

Why would a 10kg weight at 5m height have less GPE on the Moon than on Earth?

Its Gravitational Potential Energy (GPE) will also double, as GPE is directly proportional to height.

How does the GPE of an object change if its height is doubled, assuming mass and gravity remain constant?

The work done against gravity is equal to the gain in the object's Gravitational Potential Energy (GPE).

If an object is lifted against gravity, what does the work done in lifting it equal?

Approximately 9.8 N/kg (Newtons per kilogram) or 9.8 m/s² (metres per second squared).

What is the typical value of 'g' (acceleration due to gravity) on Earth near its surface, and what are its units?

English (UK)

Key concepts, formula, and energy transfer principles of gravitational potential energy for physics students.

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Gravitational Potential Energy

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Gravitational Potential Energy

Flashcards

Gravitational Potential Energy

Flashcards